Scraper shoe



C. E. GILBERT SCRAPER SHOE May 24 1927.

Filed June 21, 1926 INVENTOR C. i G/LBE BY WW 7 6a.

ATTURNEYD Patented May 24,

PATENT OFFICE.

CLARENCE E. GILBERT, OF ABERDEEN, SOUTH DAKOTA.

SCRAIER SHOE.

Application filed June 2'1,

My invention relates to improvements in attachable shoes for scraper buckets, and it consists in the combinations. constructions and arrangements herein described and claimed.

An object of my invention is toprolong the life of the ordinary scraper bucket by providing a shoe upon which the bucket will swing when it is brought to dumping position, this shoe being so constructed that it will outwear the ordinary shoe.

A further object is to provide an attachable shoe which can be readily applied not only to the old shoe support, but to one which has actually been broken, and in such a manner as to render the device as good as new.

A further object is to provide an adjust-v able shoe of the type described, which may be readily titted to the supports of the old shoe, and which when in position will remain permanently.

A "further object is to provide a shloe which acts as a counterbalance to the scraper bucket, thus making the scraper easier "for an operator to handle.

Other objects and advantages will appear in the following specification, and the novel features of the invention will be particu larly pointed out-in the appended claims.

My invention is illustrated in the accompanyiug drawings, "forming part of this ap plication, in which Figure 1 is a side view of a scraper bucket, showing my improved shoe applied thereto,

Figure 2 is an enlarged detailed view of the shoe as applied to a broken shoe support, and

Figure 3 is a section along the line 3--3 of Figure 2.

Referring now to Figure 1, I have shown a scraper bucket l of the type mentioned. This has an angle iron 2 extending forwardly, thence upwardly, thence rearwardly and downwardly, and being secured at 3 to the bucket. The angle iron 2 forms the sup port for a shoe, which heretofore has been a relatively thin piece of metal secured to the angle iron support 2 at the vertically extending portion thereof in Figure 1, since it is upon this portion that the scraper bucket is rocked to dump it. v

My improved shoe consists of a relatively 1926. Serial No. 117,517.

heavy body portion 4; of cast steel which is curved to conform to the contour ot'that portion of the shoe support at the left of Figure 1. This body portion has an integral extension 5 on one sidethereot' and at right angles to the tread portion of the body 4:. It is provided with aplurality o1. bosses, and each of these bosses has a central groove 7 extending longitudinally thereof. The lateral extension 5 has a rectangular slot 8.

At 9 I have shown clamping members, each 0t which has a lug 9 arranged to enter one ot the slots 7 to prevent rotation of the clamping member. The latter has a central opening arranged to receive a bolt 10, such as a carriage bolt, which passes through the slot 8 and is provided with a nut 11 on its threaded end.

From the foregoing description of the various parts of the device, the operation thereof may be readily understood. As has been before stated, scraper buckets of this type are arranged to dump by rotating them. Thus in Figure 1, the bucket 1 would be rotated to the left. The ordinary practice is to use a thin metal shoe which is connected to the shoe holding angle iron 2. Instead of this thin shoe which quickly wears out, I provide my attachable shoe which may be attached directly to the shoe support 2, even if the latter should be broken. Thus in Figure 2, I have shown a broken shoe support, this support having been broken and even worn partly away by wear. I In applying my device, the extension 5 is brought up on one side of the angle iron support 2 (see Figure 3), while the tread portion at engages the face of the angle iron. The clamping members 9 are then secured in place over the inner portion of the shoe holding member 2, and the nut 11 is tightened. This clamps the shoe firmly in position. The clamping members 9 are prevented from rotating, as stated, by means of the lug 9 which rides in the slot 7. It is not necessary to entirely withdraw the bolt in order to take off the shoe or to replace it, since by loosening the nut 11, the clamp 9 may be swung free of the member 2, when the shoe can be removed.

As stated, the shoe is heavy, and it c0unterbalances the bucket so that, in addition to wearing longer, it provides a means 1. The combination with a scraper bucket having a shoe holding member, of curved shoe of Wear-resisting material arranged to fit on a portion of said shoe holding member and having an extension on one side thereof, and clamping means carried by said extension and arranged to engage the in ner part of said shoe holding member for clamping said shoe to said shoe holding member.

2. The combination ofa curved metal shoe having an integral. lateral, extension at one edge thereof, said extension having a slot, a boss integral with said extension and having a groove, a clamping member having a lug arranged to enter said groove for preventing rotation of said clamping member, and means for forcing said clamping member toward said extension.

3. The combination of a curved metal shoe having an integral lateral extension at one edge thereof, said extension having a slot a boss integral with said extension and having a groove, a clamping member having a lug arranged to enter said groove for preventing rotation of said clamping member, and 7 means for forcing said clamping member toward said extension, said last named means comprising a bolt arranged topass threng'h said clamping means and through said slot, and a nut on said bolt and arranged to engage said extension.

CLARENCE E. GILBERT, 

